Development of Mucoadhesive Buccal Films of Glipizide

For improving bioavailability in controlled release fashion and to circumvent the hepatic first pass effect of glipizide mucoadhesive buccal films of glipizide were prepared by solvent casting technique. Buccal films were prepared using hydroxy propylmethylcellulose, sodium carboxymethylcellulose, carbopol934P and Eudragit RL-100. Films were evaluated for their weight, thickness, surface pH, swelling index, in vitro residence time, folding endurance, in vitro release, ex vivo permeation studies and drug content uniformity. The films exhibited controlled release over more than 6 h. From the study it was concluded that the films containing 5 mg glipizide in 4.9 % w/v hydroxy propylmethylcellulose and 1.5 % w/v sodium carboxymethylcellulose exhibited satisfactory swelling, an optimum residence time and promising drug release thus proved to be potential candidate for the development of buccal films for therapeutic use.